_fromSeconds_() {
    # DESC:   Convert seconds to HH:MM:SS
    # ARGS:   $1 (Required) - Time in seconds
    # OUTS:   Print HH:MM:SS to STDOUT
    # USAGE:  _convertSecs_ "SECONDS"
    #     To compute the time it takes a script to run:
    #       STARTTIME=$(date +"%s")
    #       ENDTIME=$(date +"%s")
    #       TOTALTIME=$(($ENDTIME-$STARTTIME)) # human readable time
    #       _convertSecs_ "$TOTALTIME"

    ((h = ${1} / 3600))
    ((m = (${1} % 3600) / 60))
    ((s = ${1} % 60))
    printf "%02d:%02d:%02d\n" $h $m $s
}

_toSeconds_() {
    # DESC:   Converts HH:MM:SS to seconds
    # ARGS:   $1 (Required) - Time in HH:MM:SS
    # OUTS:   Print seconds to STDOUT
    # USAGE:  _toSeconds_ "01:00:00"
    # NOTE:   Acceptable Input Formats
    #           24 12 09
    #           12,12,09
    #           12;12;09
    #           12:12:09
    #           12-12-09
    #           12H12M09S
    #           12h12m09s

    local saveIFS
    local h
    local m
    local s

    if [[ $1 =~ [0-9]{1,2}(:|,|-|_|,| |[hHmMsS])[0-9]{1,2}(:|,|-|_|,| |[hHmMsS])[0-9]{1,2} ]]; then
        saveIFS="$IFS"
        IFS=":,;-_, HhMmSs" read -r h m s <<<"$1"
        IFS="$saveIFS"
    else
        h="$1"
        m="$2"
        s="$3"
    fi

    echo $((10#$h * 3600 + 10#$m * 60 + 10#$s))
}

_countdown_() {
    # DESC:   Sleep for a specified amount of time
    # ARGS:   $1 (Optional) - Total seconds to sleep for(Default is 10)
    #         $2 (Optional) - Increment to count down
    #         $3 (Optional) - Message to print at each increment (default is ...)
    # OUTS:   None
    # USAGE:  _countdown_ 10 1 "Waiting for cache to invalidate"

    local i ii t
    local n=${1:-10}
    local stime=${2:-1}
    local message="${3:-...}"
    ((t = n + 1))

    for ((i = 1; i <= n; i++)); do
        ((ii = t - i))
        if declare -f "info" &>/dev/null 2>&1; then
            info "${message} ${ii}"
        else
            echo "${message} ${ii}"
        fi
        sleep $stime
    done
}